Hi I need a help in my 02 Dakota Quad Cab,
Diagnostic check results I have is........
1) H02S Heater Control Circuit Low Bank 2 Sensor 1 .
2) 02 Sensor Circuit High Voltage Bank 2 sensor 1 .
3) 02 Sensor Heater Circuit Bank 1 Sensor 2 .
4) 02 Sensor Heater Circuit Bank 2 Sensor 2 .
5) Evaporative Emission System Leak Detected ( small leak)
6) Evaporative Emission System Leak Detected ( large leak)
7) Cylinder 8 Misfire Detected.
Please any one can help me on this issues
Thank you.......

 

I will move this to the 2nd generation Dakota sub-forum.

 

What engine do you have?

 

2002. Dakota Quad 4.7L 2WD Automatic trans.

 

In reverse order:

Pull #8 spark plug. What's its condition? How does the coil look? It can also be injector related.

The EVAP leaks could be as easy as a loose/bad gas cap. It may also be broken/cracked evap lines. Look near the filler neck especially.

Have you done anything to the O2 sensors, replaced them lately?

On the two downstream sensors, 1/2 and 2/2, is the O2 heater relay in the PDC working? It may have failed, it supplies power to both heaters.

The bank 2 upstream 2/1 may have failed. Don't use Bosch as a replacement.

 

Thank you